package com.atguigu.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

@Service
public class PaymentService {
    public String paymentInfo_OK(Integer id){
        return "线程池:"+Thread.currentThread().getName()+"     paymentInfo_OK,id"+id+"\t"+"hhaha~~~~";
    }
// @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "3000"
    // 3秒内正常运行 三秒以上执行  fallbackMethod= "paymentInfo_TimeOutHandler" 方法
    @HystrixCommand(fallbackMethod= "paymentInfo_TimeOutHandler",commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "3000")
    }
    )
    public String paymentInfo_TimeOut(Integer id){
        int timeNumber=4;
        try {
            TimeUnit.SECONDS.sleep(timeNumber);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池:"+Thread.currentThread().getName()+"     paymentInfo_TimeOut,id"+id+"\t"+"hhaha~~~~  耗时"+timeNumber+"s";
    }
    public String paymentInfo_TimeOutHandler(Integer id){
        return "线程池:"+Thread.currentThread().getName()+"     paymentInfo_TimeOutHandler,id"+id+"\t"+"惨了惨了惨了~~~~~~~~";
    }

    //服务熔断

    //=====服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),// 是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),// 请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"), // 时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"),// 失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id) {
        if(id < 0) {
            throw new RuntimeException("******id 不能负数");
        }
        String serialNumber = IdUtil.simpleUUID();

        return Thread.currentThread().getName()+"\t"+"调用成功，流水号: " + serialNumber;
    }
    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id) {
        return "id 不能负数，请稍后再试，/(ㄒoㄒ)/~~   id: " +id;
    }

}
